Bobbin for looms



p 927 J. LUCAS BOBBIN FOR LOOMS Filed Oct. 51, 1925 Patented Sept. 13,1927.

UNITED i STATES" LUCAS, OF SAVANNAH, GEORGIA, ASSIGNOR T LUCASLAMBORN LOOM CORP- OFNEW YORK, N. -Y., A CORPORATION OF NEW YORK.

JONATHAN.

PATENT OFFICE .T

301mm FOB Looms.

Application filed October 31,1925, Serial m5. 65,934.

1 My inventionrelates to bobbins for looms and has for its object LO P IOVIdG the bobbin with a simple and efficient device which is e maintained in an inoperative position by the supply of yarn on the bobbin and which is, constructed and arranged to automatically assume an operative position, when said supplyof yarnis exhausted, to bring about a stoppage of the loom nechanisnii or a substitution of bobbins. The invention contemplates particularly a novelconstruction in Which the aforesaid device is automatically adjusted to its inoperative positionwhen the bobbin is placed upon the 16 spindle of a winding machine for rewinding a supply of yarn on said bobbin. The invention will be fully described l101B1Ilafter and the features of novelty will be pointed out in the claims. v

In the accompanying drawings, which illustrate an example of the invention without definin its limits, Fig. 1 is an exteriorview of the obbin, partly in section, with the invention incorporatedtherein; Fig. 2'1s an end view thereof; Fig. 3 is a sectional view on the line f'3-3 of Fig. 1;'Fig. 4 is a View similar to Fig. 1 showing the obbin in section with a supply of yarn thereon; Fig. 5 is a cross-section on the line 5-'5 of Fig. 4; :0 Fig. 6 is a viewof the shuttle with the novel bobbin, in place "therein and Fig. 7 1s a cross section on theline 771of;Fig. 6.

The bobbin itself may be of any well known and conventional type and in" the 'il- 86 lustrated example comprises a base 10 taper- ;ig towaid and comprising an axial continuation of a stem 11,.the outer surface of said base 10 being preferably stepped in the customary manner. The stem 11 is provided with the conventional bore 12 which extends lengthwise of the stem, and in the illustrated arrangement communicates with a chamber 13 located internally of the bobbin of the base 10 thereof; the bobbin. is further constructed in such a manner as to enable it to be detachably mounted in the customary shuttle, and for this purpose may be provided with a sleeve 14 connected w ththe' free end of the base 10 and forming a continuation thereof as shown in the drawings.

The aforesaid chamber 13 is preferably of inwardly tapering form and at its apex end is of somewhat larger diameter than the 1 inner diameter of the bore 12 at this point so as to form an internal shoulder '15 as shown in Figs. 1 and 3; a slot 16 is formed in thebase 10 so as to communicate with some cases" this second slot 17 may be omitted, the presence or absence of this slot 17 dependingupon the physical characteristics of the device which constitutes the present invention. i i

In theNillustrated example the device, wherebyithe stopping of the loom mechanism or a substitution of. a filled bobbin for an empty one, automatically takes place when the supply of yarn upon the given bobbin has been exhausted, comprises a tripping member 18 located in registry'wit-hthe slot 16 and adapted to project theretlirough in an operative position when the supply of yarn uponthe bobbin is exhausted. This tripping member is yieldingly mounted in the chamber 13, and as shown may comprise an integral portion of the member 19 of an approximatel V-shaped spring, the other leg 20 of which lies in'surface engagement with the inner surface of the chamber'13; at its free end the leg 20 is provided with a projection 21 seated in an aperture 10"" of. the base 10. The aforesaid- V-shaped springis' coiled upon itself to form nneyelet 22located in axial registry with the bore 12 and in'engagementwith the aforesaid in? ternal shoulder 15. To facilitate the manual adjustment of the tripping member 18 to its inoperative position, if for any reason this becomes necessary or'desirable, the free end of the member 19 may be bent to form a finger piece 23 located in registry with the slot 17 and projecting outwardly therethrough when the tripping member is in its operative position as shown in Fig. 1. The device comprises further a cone-shaped con trolling member 24 having its one 1 end formed with a suspending member 25 to suspend said controllingmember 24 at its one end from the member 19 of the V-shaped spring as shown in Fig. 1. To facilitate the combination of the parts the controlling member 2% may be slotted as indicated at 26 in Fig. 3.

When the bobbin is empty, that is when the supply of yarn therein is exhausted, the parts occupy the position shown in Fig. 1, in which the V shaped spring is removably fixed in the chamber 13 with the members 19 and 20 thereof in surface en agement with the wall of the chamber 13 and with the eye a let 22 resting against the shoulder 15. Under these conditions the trippingmember 18 and the finger piece 23 project outwardly through the slots 16 and 17 respectively and the projection 21 is seated in the aperture 10; in this position of the parts the controlling member 24: is suspended'from the member 19 at an inclination toward the free end of the base 10, the arrangement being such that the controlling member 24 flares outwardlytowards the same as shown in Figs. 1, 2 and 3.

For the purpose of winding a supply of yarn upon the bobbin the latter, generally member 24 into axial registry with the bore 12; in other wordsthe aforesaid apexend of the member 24 is shifted inwardly from the position shown in 1, and because of its positive connection with they member 1'9 will correspondinglyshift the latter and thereby withdraw thetripping member 18 to its inoperative position asshown inFigs.

4 and In suehinoperative position, the tripping member lies entirely withinthe outer surface of the base 10; at thesame time the finger piece 23 is correspondingly moved to the position shown in Fig. 4. As

the combination of the parts is continued,-

the spindle will finally pass through theeyelet 22 and become seated in the bore 12 in the manner indicated in Fig.4, in which position the surface of the spindle is frictionally engaged by the eyelet 22; this'fric: tional engagement between the spindle and the eyelet assists in maintaining the bobbin against rotation relatively to the spindle 27, it being understood that any other means conventionally used for preventing such rotation may be also included in the arrangement if desired. The winding of the yarn upon the bobbin then proceeds in the'cusative position against the inherent tension of the V-shaped spring. After having been fully wound, the bobbin is withdrawn from the spindle 27 and the tripping device is maintained in its inoperative position by the yarn 28 as set forth above.

W hen combined with the shuttle 30 the bobbin is mounted inthe chamber '31 there'-' of in any customary manner as indicated in Fig. 6. With the arrangement set forth, the tripping member 18 will remain-in its inoperative position as long as a sutiicient amount of yarn remains upon said bobbin. lVhen the supply of yarn reaches its last few convolutions upon the base 10, theresistance will be insuflicient'to maintain the tripping member 18 against the resiliency of the V-shaped spring. condition is-reached, the member 18 will be automatically projected through the recess 16 to its operative tripping position beyond the surface of the'bobbin base 10 as shown in Figs. 1 and 2. The member 18 thus lies in thepath of a member 29 which accordingly comes into contact therewith and thereby either causes a stoppage of the loom mechanism or brings about an operation of the magazine mechanism whereby the empty bobbin is removed from the shuttle and a new one is substituted therefor. i

It will be noted that no manual or other extraneous manipulation of the tripping de-.

vice is required to bring the tripping member 18 to its inoperative position when .it

desired to rewind the bobbin with a new supply of'yarn. The setting of the tripping member 18 to its inoperative position is antomatically accomplished by the mere act of placing the bobbin upon the spindle of the winding machine and brought about as hereinbefore stated by the cooperation of the spindle 27 with the controlling member 2e. It will be seen from the drawings that the \l-sh-aped spring and its related elements may readily be removed from the chamber As soon as this Heretofore in devices of cessity for manual operation is entirely avoided and complicated devices to attain the desired results are done away with.

Various changes in the specific form shown and described may i be made within the scope of the claims Without departing from the spirit of my invention. sliclaimz-w-e H j .11. The combination of a bobbin of the kind described, a tripping device. carried by said bobbin and heldin an inoperative position thereon byjthe yarn upon said bobbin, said device automatically assuming an operative tripping posit-ion when the supply oi yarn on said bobbin is exhausted and independent means carried by said bobbin and connected with saidtripping device whereby the latter is automatically adjusted to its inoperative position when said bobbin is placed upon the spindle of a winding machine for receiving a supply of yarn.

2. The combination of a bobbin of the kind described, a tripping device carried by said bobbin and held in an inoperative position thereon by the yarn upon said bobbin, said device autol'natically assuming an operative tripping position when the supply of yarn on said bobbin is exhausted and independent means carried by said bobbin and connected with said tripping device, said means co-operating with the spindle of a winding machine to automatically adjust said tripping device to its inoperative position when said bobbin is placed upon said spindle for receiving a supply of yarn.

3. The combination of a bobbin of the kind described a tripping device carried by said bobbin and held in an inner inoperative position thereon by the yarn upon said bobbin, said device automatically shifting outwardly to an operative tripping position when the supply of yarn upon said bobbin is exhausted and an independent device carried by said bobbin and connected with said tripping device whereby the latter is automatically drawn inwardly to its inoperative position and held therein when said bobbin is mounted upon a winding machine for receiving a supply of yarn.

4. The combination of a bobbin having a base and a stem, said base being provided with a surface slot and an interior chamber in communication therewith and said stem having an axial bore forming a continuation of said chamber for the reception of the spindle of a winding machine, a tripping device mounted in said chamber and includ ing a tripping member normally held in an inoperative position, in registry with said slot, by the yarn upon said bobbin and automatically shifting outwardly through said slot to an operative tripping position when the supply of yarn upon said bobbin is exhausted and an independent setting member loosely connected with said tripping device and adapted, for engagement with said spindle to automatically adjust the tripping member to its inoperative position when said. bobbin is placed upon said spindle for receiving a supply of yarn.

5. The combination of a bobbin having a base and a stem, said base being provided said bobbin. and arranged to automatically snap outwardly through said slot, to an operative tripping position, when the supply of yarn upon said bobbin is exhausted and a hollow, tapering, setting member having its apex end suspended from the tripping member leg or said spring and arranged to cooperate with said spindle to shift said leg inwardly and automatically set said tripping member in its inoperative position when said bobbin is placed upon said spindle for receiving asupply of yarn.

6. The combination of a bobbin of the kind described provided with a slot in its surface and having an open chamber at its one end communicating with said slot, a tripping member normally held in said slot in an inoperative position by the yarn upon said bobbin, a spring fitted in said chamber and connected with said tripping member whereby the latter is projected out of said slot and the tripping member is coincidentally projected out of said recess to an operative tripping position when the supply of yarn on said bobbin is exhausted and a cone shaped member located within said chamber and connected with said spring, said cone shaped member cooperating with the spindle ot' a winding machine to automatically reset said tripping member to an inoperative position.

7. The combination of a bobbin of the kind described provided with a slot inits surface and having an open chamber at its one end communicating with said slot, a tripping member normally held in said slot in an inoperative position by the yarn upon said. bobbin, a spring fitted in said chamber and connected with said tripping member whereby the latter is projected out of said slot to an operative tripping position when the supply of yarn on said bobbin is exhausted and a loop on said spring in axial registry with said chamber for frictionally surrounding and gripping the spindle of a winding machine to hold and centre the bobbin thereon.

8. The combination of a bobbin of the kind describedprovided with a slot in its surface and having an open chamber at its one end communicating with said slot, a tripping member normally held in said slot in an inoperative position by the yarn upon said bob bin, a springfitted in said chamber and con nected witli said tripping member whereby the latter is projected out of said slot to an operative tripping poiition when the supply of yarn on said bobbin is exaausted, a cone shaped member located within said chamber and connected with said spring, said cone shaped member cooperating with the spindle of a'winding' machine to automatically reset said tripping member to an inoperative position and a loop on said spring in axial registry with said chamber for triotionall'y engaging said spindle to hold and centre the bobbin thereon.

9. The combination of a bobbin of the kind described, a tripping device carried by said bobbin and held in an inoperative position thereon by the yarn upon said bobbin, said device automatically assuming an operative positon when the supply of yarn on said bobbin is 621 ansted, and an independent cone shaped member carried by said bobbin and connected with said tripping device said cone shaped member cooperating with the spindle ot a winding machine to automatically re-setthe tripping device to an inoperative position.

In testimony whereof I have hereunto set my hand.

JONATHAN LUCAS. 

